Improvement in mechanical movements



Mechanical Movements.

CUMLY;

Patented Sept. 8,187 4.

UNITED STATES PATENT QFFIGE JOSHUA GOMLY, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN MECHANICAL MOVEMENTS.

Specification forming part of Letters Patent No. 154,844, dated September 8, 1874; application filed June 27. 1874.

To all whom it may concern Be it known that I, JOSHUA GoMLv, of Philadelphia, Pennsylvania, have invented a new Mechanical Movement, of which the following is a specification:

The object of my invention is to dispense with gearing usually employed in stone-breaking machines, and other machines which, in their operations, demand the exercise of great power, and this object I attain by the application of the mechanical movement which I will now proceed to describe, reference being had to the accompanying drawing, in which Figure 1 is a vertical section, and Fig. 2 a plan View, of the movement as applied to a stone-breaking machine.

A is the frame of the machine, between the opposite sides of which are arranged the two breaking-jaws B and B, the former being fixed, and the latter being connected at its lower end to the frame by a pivot, a, the upper end being connected, by links D and I), to a pin, 6, to which is also connected the rocking arm E and the upper end of the connecting-rod F, the lower end of the latter being connected to the pin of a crank, G, on the driving-shaft of the machine. The outer end of the rocking arm E is adapted to and bears in a recess or socket in the fixed jaw B, to which the arm is hinged by a pin, f.

It will be evident that the motion imparted to the pin 0 by the crank G must be restricted by the rocking arm E to thesegmental line :12, and that the movement of this pin 0, from its lowermost point t to its highest point 1 must insure a more limited movement through the links D and D to the jaw B from the radial line w to the radial line 22.

It will also be evident that the power exerted by the crank G on the driving-shaft is exerted through such great leverage on the jaw B as to render the employment of the usual cog-gearing unnecessary.

Although I have described my invention as applied to a stone-breaking machine, the same movement may be adopted in punching, swaging, shearing, and other machines, in a manner which will be readily understood by those familiar with machinery of this class.

I claim as my invention A mechanical movement in which are combined a crank, G, connecting-rod F, a rocking arm, E, adapted at its outer end to a fixed bearing, links D, and jaw or lever B, all sub stantially as described. m

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' JOSHUA OOMLY. Witnesses:

WM. A. STEEL, HUBERT HoWsoN. 

